Obama rejects Keystone XL pipeline in win for greens

By Timothy Gardner and Jeff Mason WASHINGTON (Reuters) - U.S. President Barack Obama on Friday rejected the proposed Keystone XL oil pipeline from Canada in a victory for environmentalists who campaigned against the project for more than seven years. "The pipeline would not make a meaningful long-term contribution to our economy," Obama told a press conference. The denial of TransCanada Corp's more than 800,000 barrels per day project will make it more difficult for producers to develop the prov